Hello! I am working on a project that requires me to decode mpeg-4 streams so that I can extract meaningful information about the video (including motion vectors detailing the movement of objects in the stream). The reason I need to do this is so that later, I can write an algorithm to track a moving object in a video stream. I am working in a Linux platform with the Fedora Core 5 distro. Is there any existing tool out there that will read in mpeg-4 streams and decode them for my particular platform? Please help me!! I have never worked with video compression standards before.